Information recording apparatus and control method thereof

Details Information recording apparatus and control method thereof Information recording apparatus and control method thereof

2006-10-24

2006-10-24

Edun, Muhammad (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S059150, C369S124010

Reexamination Certificate

active

07126893

ABSTRACT:
An information recording apparatus includes a pickup which irradiates a recording light to a disc on which prepits are formed and which outputs return light quantity data, a period determination circuit which determines a data obtaining period in which return light quantity is not affected by the prepit, a sample-hold circuit which obtains the return light quantity in the data obtaining period, and a microcomputer which controls a recording power based on the return light quantity data. The microcomputer obtains the return light quantity data in the data obtaining period in which the return light quantity is not affected by the prepit, and executes control including the recording power control based on the return light quantity data. As a sample-hold circuit detects a pit level and the like in a 9T to 11T period which is hardly affected by the LPP and controls the recording power based on the result, proper recording power control can be executed.

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